kirby



9 SheetsSheet 1.

(No Model.)

J. KIRBY, Jr.

LAMP.

Patented Mar. 24, 1885.

Witnesses:

inventor: fl 7 N. PETERS Phoxo-Lixhn mphor. Wnshinglom D. (L

(No Model.) I 9 Sheets-Sheet 2.

J. KIRBY. J-r.

LAMP.

N. PETERS. Pmla-uxm m vwr, washm mn, D. cv

(No Model.) 9 Sheets-Sheet a.

J. KIRBY, Jr.

I LAMP. N0. 314,250. Patented Mar. 24, 1885.

Inventor: I

a. PETERS. PlwlQLlfllogmplmr. Wnshi n nnnnnn c.

(No Model.) 9 Sheets-Sheet 5. J. KIRBY, Jr.

LAMP

No. 314,250. Patented Mar. 24, 1885.

Inventor; Kw

A y L 3 e a c S S s V C C 1 n M I .l k c A N. PETERS. Phuwulhn m her.Wahingon. n. C.

(No Model.) 9 Sheets-Sheet 7.

J. KIRBY, Jr.

LAMP.

No. 314,250. Patented Mar. 24, 1885.

(No Model.)

J. KIRBY, Jr. 9 Sheets Sheet 9.

LAMB. No. 314,250. Patented Mar. 24, 1885.

FIG-3I Jaw i 2% I M/z/w O N. PETiRS. Phclo-Ulhngraphen Wanhingmn. 0.5.

Unwrap STATES Farmer Onrrcn.

JOHN KIRBY, JR, OF DAYTON, OHIO, ASSIGNOR TO THE DAYTON MANU- FACTURINGCOMPANY, OF SAME PLACE.

" LAMP.

SPECIFICATION forming part of Letters Patent No. 314,250, dated March 21-, 1835.

Application filed July 5, 1883. (No model.) I

T0 aZZ whom, it may concern.-

Be it known that I, JOHN KIRBY, Jr., of Dayton, Ohio, have invented anew and useful Improvement in'Lamps, of which the following is a full,clear, and exact specification,

reference being bad to the accompanying drawings,forming part ofthisspecification, in which similar letters indicate'the same parts, and inwhich Figure 1 is a section through reservoir and cast ring A, showing(a) attachments of main support to the cast rings A and G and (b) theattachment of lamp proper and lifting-rod. Fig. 2 is a section throughlamp, showing its attachments to lifting-rod A and to airconduit B; Fig.8, plan of cast ring A and part of cast ring G, showing supportingd'eetm" and aireonduit. Fig. 4 is a sectional view of binding arm and hanger,showing attachments to brace-ring G and cast ring A. Fig. 5isa sectionof cast ring A at m as, Fig. 3. Fig. Gisa perspective view showingmanner of attachment of conduit 13 to cast ring A. Fig. 7 is a sectionof brace-ring G at a m, Fig. 3. Fig. Sis a plan of conduit 13, showinghow itscover 0 forms part of cast ring A. Fig. 9 is a section throughconduit B, on line 00 as, Fig. 8, showing cast ring A, liftingrod A",and fastening-screw d in elevation. Fig. 10 is a perspective view ofcover of conduit 13. Fig. 11 is a cross-section of cover 0 on line a0a1", 10. Fig. 12 is a horizontal section in line 95 00 Fig. 2, showingcylindrical end of conduit B and vertical cylinders of lamp in position;also the cover 0, abutting against air-chan1- ber cylinder M. Fig. 18 isa section through conduit B on line a m Fig. 12, showing its cylindricalend air chamber cylinder-,lVLin elevation. Fig. 14 is a vertical sectionthrough valve and valve-seatin bottom of oilreservoir K, Fig. 1. Fig. 15is a horizontal section on line 00 at, Fig. 14. Fig. 16 is a plan oflower side of ring u, Fig. 14, showing under side of valveseat. Fig. 17is a plan of rubber ring B. Fig. 18 is a crosssection of rubber ring B.Fig. 19 isa vertical section through side of oil-reservoir K, brace-ringG, and east ring A, showing lifting-rod A in position. Fig. 20 is a planof notch in plate H, showing lug 00 on reservoir. Figs. 21, 22, and 23are views of retaining device B. Fig. 24 is a plan of ring F. Fig. 25 isa perspective view of ring F, with its means of attachment oflifting-rod A. Fig.26 is a section through chimney-holder, burner-cap,burner-plate, burner-cylinders, and their coupling devices. Figs. 27 and28 are perspective views of rings G and ll and cylinder M, coupledanduncoupled. Fig. 29 is a plan of hurricane-cap, showing divisionplates.Fig. 30 is an elevation of the lamp complete, one of the lamp-burners,with its shade, being elevated to permit the wick to be trimmed.- Fig.81 shows the shade alone elevated to permit the removal of the chimney.

My invention relates to lamps, and more especially to lamps that areadapted to be be readily detached for filling without taking down anyother part of the lamp. The lamp, further, is provided with means forraising the shadeholder without necessarily moving any other part of thelamp, and for raising the shade-holder, with the shade attached, thechimney-holder, and burner-cap together, if that be desired, as it maybe in lighting the lamp or trimming the wick, without moving anyotherpart of the lamp.

The construction of my lamp with these objects in view is as follows: Toa cast ring, A, Figs. 1, 1, and 3, having the air-tube, arms B, bosses aa, furnished with internal screwthreads, the flanges Z) and c on itsupper and near its upper edge, and turned out orcast with a recess, sothat there shall he a flange, d, at its lower edge, a cylinder, D, whichreceives and forms an air-chamber around the lower end of the reservoir,is attached by securing, by solder or otherwise, its lower edge to theflange c. This cylinder D has the airopenings 6 6 immediately above itslower edge. To the inner side of the cylinder D, above the air-openingse e, is secured the plate f, open at the center. To a flange on theinterior edge of platef is secured by solder or otherwise an oil-holder,E. The sides of the oil-holder E project above the plate f, and areturned or crimped over an elastic ring, (shown in the drawings, Figs. 17and 18, as a rubber ring, R, having the flange 1-,) which they hold inplace.

The function of the rubber ring is to prevent the overflow of oil out ofthe holder E when it is violently moved by the jolting of the cars.

The oil-holder E is at its bottom secured to plate h, furnished with aninternal screwthread. A stem, is, screws into the plate 72, and is alsofurnished with an internal screwthread. An ornamental bottom piece, Z,fits into the recess or turned-out bottom edge of ring A at flange d,and its bottom is perforated to admit of the passage of the screw-piecem, which sets closely up to the bottom ofthe stem k. By means of thescrew-piece m the ornamental bottom piece, Z, and the stem It, with itsattachments, are firmly connected.

A cylinder, F, fitting inside of flange b of ring A, is secured at itsupper edge to a cast brace-ring, G. It will be seen that there is anair-space, at, between the cylinders D and F, and that the cylinder D isof less diameter and less length than the cylinder F. I do not limitmyself to any fixed relative length of cylinder D. The air to supportthe combustion of the lamp passes from the space a through the holes e ein the cylinder D, and then through the conduits B to the burners.

A plate, H, having air-openings h h and open at the center to admit ofthe entrance of an oil-reservoir, K, is secured to the bracering G atits upper edge. The outside edge of plate H is turned down to form alight flange which fits into ring G. If the upper edge of cylinder F iscontinued and firmly united to the plate H, to form a ring, the ring Gmay be dispensed with; but I prefer the construction with the ring G.-The object of the ring is to stiffen and strengthen the lamp, and it,with the ring A and the rods m, constitutes a rigid frame.

The oil-reservoir I use is made as follows: It is of the student-lamptype, and is ofa diameter somewhat less than the diameter of cylinder D,and consists of a cylinder, K, having a top plate, 1), raised at oneplace, p, to

make an airspace above the top of an airtube within the reservoir, andperforated in another place to admit the passage of an airtube, andhaving its side projected beyond the plate 19 to form a cap, 19 This capp is perforated near the top for the admission of air. The reservoir Khas an outside flange, q, near the top,"which flange rests upon plate H,and serves as a support for the reservoir when in place. The reservoir Khas a bottom plate, 8, open at the center, and secured to the innersides of the cylinder of the reservoir at any suitable distance from itsbottom edge. The interior edge of the bottom plate, 8, is secured to acylinder, t, and said cylinder t is secured to a ring, at, having aninterior screw-thread cut on it. An air-tube, V, passes through the ringa, Fig, 14, to which it is secured, and projects upwardly within thereservoir and into the air-chamber formed by the raised part 19 of thetop plate, 12. Another air-tube, V, also passes through the ring u, towhich it is se' cured, upwardly within the reservoir through the topplate. 1), and into the cap 19*. By means of the tube \V air passes fromthe cap 19 to the oil-holder E; thence through tube V to the top of theoil in the reservoir, the raised part 1) of the platep always forming anairchamber, however full the reservoir may be. It will be seen thatthere is an air-space between the oil-reservoir K and the outercylinder, F. (marked in the drawings n,) and also a lesser airspacebetween the reservoir and the cylinder D, (marked in the drawings 11".)

The oil-reservoir K has lugs at x, which fit into openings 00 in plateH, Figs. 1 and 19 and 20. These lugs serve, when they are turned underthe bottom edge of plate H. to hold the reservoir from rising by theaction of the spring 2 on the valvesiem z or from the jolting of thecars. A strengtheningband, x 00 Figs. 1, l9, and 20, may be thrownaround the cutouts or openings 00 in plate H.

My valve arrangement fixed in the bottom of the reservoir K, throughwhich oil is admitted to the reservoir, and through which it is fed tothe wick, is made as follows: The valve-seat L, Figs. 1 and 14, consistsof a cast ring having an interior flange, y, adapted to receive a valve.This ring has a screw-thread cut on it exterior-1y, and is adapted toscrew into the'ring to. From its lower edge the ring of the valve-seathas an extension, prefer ably cylindrical, so that it may serve, whenthe reservoir is held upside down, as an oilcup. From the upper edge ofthe valve-ring two stems or standards, '1" 1 Fig-s14, 15, and 16,project. A cross-bar, 3 perforated at the center to admit of the passageof a valve-stem, is secured to the standards 3/. Another cross-bar, 7perforated at the center to admit of the passage of a valve-stem, isattached to the sides of the cylindrical extension y. Through thesecross-bars passes a valve-stem, z, of the valve Z, Figs. 14, 15, and 16.The stem 2 has a notch, 2, cut in it on one side,below the valve, andhas also a thumb-piece, 2, near its lower end.

Vhen the reservoir is to be filled,it is to be turned upside down, andby pressing on the thumb-piece e the notch 2 may be brought down to thecross-bar y. \Vhcn in this position, stem .2 may be pressed to one sideto ad mit the oil. The stem z is fitted with a spiral spring, 2", abovethe valve Z. This spring 2 abuts against the cross-bar y, and serves topress the valve down on its seat when free to do so. When, however, thereservoir K is in position, the lower end of the valve-stem z rests onthe bottom plate, 72, of the oilholder E, and the valve Z is therebyheld above the valve-seat to any suitable distance.

The cast ring A, Figs. 1, 2, 3, 6, 8, 9, 12, and 13,has, as shown in thedrawings, as integral parts of the casting, tubular air-conduits B.These conduits may, however, be of other material and otherwiseattached. These conplate H.

duits are at their outer ends cylindrical, as

shown in Figs. 3 and 12, to receive the cylinders of the burner, asshown at Fig. 2, to which 7 they are secured, but may be of any form tosuitthe chambers they receive. conduits join the ring A said ring is cutaway, as shown in Fig. 6, and the upper side of said conduits are alsocut away, and are fitted with covers 0, as shown in Figs. 1, 2, and 3.The cover 0, Fig. 10, has flanges c. and a at itsinner'end,corresponding in every respect to the flanges b and c of thering A, which serve as continuations of the flanges b and a when thecover is in position. The cover 0 has also on its upper face a flangedreceptacle, c, to hold a card of directions for the instructions of thehandlers of the lamp. The coverC atits outer end abuts against thecylinder of the burner and conforms to its shape.

An oil-conduit, M, Figs. 1 and 2, leads from theinside of the.oil-holder E through the airconduit B to the oil and wick cylinder L ofthe burner.

The conduits B and covers 0 are perforated by a hole, a and a (Shown inthe drawings, Figs. 3, 8, 9, and 10, as square for the passage ofalifting-arm, A also shown as square in Figs. 1, 2, and 19.)

I now proceed to describe my lifting-rod A, Figs. 1 and 2, and itsfunction.

A liftingrod, A, passes through the hole a in the air-conduit B and thehole a in the cover 0, and through the brace-ring G and The lifting rodA is fitted at its lower end with a device, B, Fig. 21, for retainingthe rod,when elevated, by engaging its catch Z) with the lower side ofthe conduit B. This device B, Figs. 21, 22, and-23, consists of acasting, I), having a thumb-piece, b", screwed to its lower end andstuds b and 6 near its upper end and lower end. On the stud I) ispivoted a catching-lever, b, having the thumbpiece b and on the stud bis placed a spring, 11 which rests against the back of thecatching-lever, and tends to force the lever through a slot cut in theside of the lifting-rod A. This device is inserted into the lower end oflifting-rod A, and when in position the catching projection 22 of thelever passes through the side of the rcd and rests on an uncut bar-likeportion, 2), of the cut side as a retaining-support. The thumb-piece ofthe catching-lever also projects through the side of the rod below thesaid uncut portion 1). This device operates as follows: By pushing onthe thumb-piece b" the rod is lifted un til the catching projection b ofthe lever b passes the edge of the bottom side of the air conduit B,whenit is forced by the spring I) to project beyond the line of the side dfthe rod A, and engages with the said lower side of the conduit B. Therod is thus retained atthat elevation. This rod A, as will be more fullypointed outhereinaftenserves to lift the shadeholder, chimney holder,and burner -cone. The retaining device B is to be used when the Wherethese rod is raised temporarily-as, for instance, in lighting the lamp.

The lifting-rod is held permanently at anyheight desired by athumb-sorew, 01, Figs. 8

and 9, which passesthrough a screw-thread boss, (1, on theside oftheair-duct B,and into the conduit sufficiently far to press against theside of the lifting-rod.

' Above the brace-ring G a curved cast piece, C, having a squareshoulder, fits into and is firmly attached to the lifting-rod, and isalso firmly attached to a shade-holder, D, Fig. 2. I make thelifting-rod thus in two parts, A and O, as a matter of convenience inconstruction.

The holder D shown in the drawingsis the one patented to me December 26,1882, by Letters Patent numbered 269,587. I however now make an improvedhurricane jack or chimney-cap, D as shown in Figs. 2, 29, 30 and 31.This cap D is closed on top, and is perforated, as at f, to permit theresults of combustion to escape around the sides, and internally isdivided into compartments by divisionplates f; These plates serve toprevent drafts of air froniblowing across the top of the chimney throughthe air-opcningsff, and thereby creating a vacuum, and affecting, if notputting out, the flame ofthe lamp.

The liftingrod A also passes through a boss, E, Figs. 1, 2, 24 and 25,on a ring, F, fitted with a thumb-screw, e. By means of this thumb-screwthe ring F may be held rigidly at any point on the lifting-rod betweenthe brace-ring G and the air-conduit B. This ring is concaved, as atf'Fig. 3, to receive the edge of the shade D and has arms f f, Figs. 2 and24, extending toward the center, where they are firmly attached to acast ring, G. The ring F may be dispensed with by attaching the boss Eand thumbscrew 6 to one of the armsfi This ring G, Figs. 2, 26, 27, and28, has exterior flanges g and g on its lower and upper edges, andnotches 9 cut in the flange y to allow of the passage of theretaining'lugs If, Figs. 26, 27, and 28, of another ring, H. Parts of aflange having the notch may be substituted for the flange g To theinside of the ring G is soldered the chimney-holder 9 Figs. 2 and 26,and inside the cl'iimney-holder g is attached a burnercap, The loweredges of this holder 9 and cap 9 extend about halfway down the side ofthe ring G, where they rest, when in position, on a burner disk orplate, K, Figs. 2 and 26, having air-opening is, open at the center. andhaving an upward flange, k", to receive a wick-tube, to which it issecurely attached, and a downward flange, 7a, to fit over an oil andwick chamber. This burner disk or plate K is downwardly flanged on itsouter edge, and is adapted to fit into ring G.

It will be seen, first, that when setscrew 6, Figs. 1, 2, and 24, isloosened, the lifting-rod A may be raised without raising the ring Fleaving the other parts of the lamp undisand its attachments. In thiscase the shadeholder D and shade only will be raised,

turbed. Second, by securing the ring F to the lifting-rod, the rod inraising carries with it the shade-holder D and its attachments and thering F and its attachments including the chimney-holder g and theburner-cap g leaving the wick-tube undisturbed and exposed, so that itmay be readily trimmed or lighted.

In my lamp, in connection with the parts above described, I use acylindrical oil and wick chamber, L, Fig. 2, which passes through thecylindrical end of air-eonduit B, Figs. 2, 12, and 13, to which it issecured. This oil and wick chamber L has a bottom plate, Z, furnishedwith a screw, Z", onto which an ornamented bottom spinning is screwedwhich extends upwardly to the air-conduit B. A drip-collar, Z, fits atits lower edge into the chamber L, next the top thereof, and is of lessdiameter at its top than at its bottom edge. A wick-tube, Z is securedto this dripcollar and also to the burner-plate K. The sides of thedripcollar are perforated, as at Z, to allow oil that would otherwiseaccumulate about the burner to re-enter the oilcham her. An oil-chambercylinder, 3 havingadiameter greater than the diameter of cylinder L, sothatthere is an air-space, nflbetwcen the cylinders, fits into thecylindrical end of the airconduit B, Fig. 2, its bottom edge resting onthe interior flange, Z, of the cylindrical end of conduit B. Flange Zencircles the oil and wick cylinder L, to which it is secured.

The cylinder M is cut out on the side toward the reservoir of the lamp.The size and shape of this cut corresponds to the size and shape of thecross-section of the air-conduit B, where its tubular part joins ontoits cylindrical part or end, as shown in Figs. 2, 9, and 13.

The cast ring G and the air-chamber cylinder M are connected securelyand closely together by means of a coupling-ring, H, h ing hookedretaining-1n gs hfladapted to go into notches of ring G. When the lugsare entered into the notches of the ring H, said ring H is turned untilthe hooked lugs h2 are engaged over and upon the flange of ring G. Ascrew-pin, h Figs. 2, 26, and 28, passes through the ring G and into aslot, h, in the side of cylinder M. This slot h" is of sufficient lengthto admit the insertion of the pin h when the retaining-lugs [L2 arepassed up through the notches of the flange g of the ring G, and also topermit of the turning of the ring G sufficiently far to bring the hookedlugs it onto the flange into a retaining po sition. I prefer to. use anadditional ring N, Figs. 2, 6, 27, and 28, outside of ring H, of rubberor some other non-conducting sub stance. When the additional ring isused, the pin h passes through the rings N and H into the slot If incylinder M.

The cast ring A, Figs. 1, 8, and 4, has two or more bosses, at. Thesebosses are screwthreaded internally to receive a screw-bolt,

m, which passes through a hollow square, m, screwed into the lower endof the bindingrod m The binding-rod m is at its upper end screwed onto adownwardly screw-threaded projection or lug, m of brace-ring G, andserves to securely bind the brace-ring G and its attachments to the ringA and its attachments.

The lamp is suspended by the hangers m screwed onto a screw-threadedprojection, on, of the ring G, and having foot-pieces m secured to'themat the upper end by a screw-lug, m The foot-pieces m are attached byscrews to the ceiling ofa car or to any suitable support for a lamp. Thethreaded pin m has a hole, in, drilled through it, for the insertion ofa rod by which it may be turned, to be screwed into or out of the bossat.

It will be seen that when the ring H, Fig. 2, is turned so that itsretaining lugs It are opposite the notches in ring G, and the pin m andthumb-piece b of lifting-rod A are removed, the cast ring A, with itsattachmentsviz., the cylinder D, the oil-holder E, the oilconduits M,the air-conduit B, and all the burner parts below the burner-cap Fig.3-- may be taken down and away from the frame of the lamp, leaving theoil-reservoir K and the air chamber cylinder F suspended from thebrace-ring G, and also leaving the raisingrod A, with the shade-holderD, ring F, and the ring G, with the chimney-holder and burner-capgfisuspended from the brace-ring G.

By loosening the set-screw e and placing the ring H into retainingposition relative to the ring G, the ring F, with its attachments, maybe taken down with the ring A and its attachments above mentioned.

It will be seen, also, that the air-openings h in the plate H, Fig. 1,are little exposed to drafts of air, being guarded therefrom by thevertical walls of the plate H.

My invention possesses advantages over all other lamps designed for thesame purpose with which I am acquainted. Among the ad vantages I mentionthe following:

((1.) The air-chambern, n, and n Fig.1, and a, Fig. 2, and the airspaceof ring A, and airconduits B have an area greater than the area of theopenings h h in plate H, which are large enough to support combustion.Therefore the air in these chambers will not be exhausted by a suddendisturbance of the atmosphere about the air-inlets. The burner beingsecurely held in position, all the joints of my lamp are practicallyair-tight, and the flame is sustained by air coming through the openingprovided for that purpose. I do not know of any other lamp on thehurricane principle which contains means for rigidly securing the burnerparts together, and no other lamp in which such parts are not easilydisplaced by the jolt-ing of the cars. Such displacement admits air tothe flame otherwise than through the hurricane-cap, and the lamp is assensitive to uneven drafts as if no efiort had been made to embody thehurricane principle.

(12.) To cleanse the chimney, to trim or light the wick in other lampsof the same general character as mine, it is necessary to force it up tothe chimney spring-holder until its bottom end will clear the cap of theburner. Then, by tipping to one side, it may be drawn down and out; butthis practice soon spreads the springs, so that they will not set closeto the chimney, and they soon become useless for the purpose for whichthey are designed. In my lamp the shade-holder containing the springchimney-top holder D is raised away from the chimney by raising the rodA, so that the proper tension of the spring-holder D is never impairedor destroyed.

Oil is admitted to the oil and wick chamber L by an oil-conduit, M,leading from the oilholder E through the air-conduit B. 'In my lamp theoil-level (shown in the drawings, Figs. 1 and 2, by the line 00* m) iskept at a constant height. When the oil-holder E and oil and wickchamber L are full to the level of a line slightly higher than the lineof the bottom ends of the air-tubes IV andV, the access of air to theinside of the reservoir is stopped,'and the oil thereafter is fed to theholder only so fast as consumed, on the wellknown principle of thestudent-lamp oil-sup- I am aware that air-chambers around anoilreservoir are not new, and also that it is not new to divideair-currents by division-plates. I therefore do not claim theseelements, broadly.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is as follows:

1. In a lamp, the combination of the bracering, G, the plate H, theoil-reservoir K, the rods in, the ring A, and the oil-holderE,substantially as described.

2. In a lamp, the combination of the cast ring A,the cylinder D,securely attached thereto and having the air-openings e e, theaircylinder F, the airronduits B, and the burner tubes of the lamp, thecylinder receiving the lower end and forming an airspace, substarrtially as described.

3. In a lamp, the combination of an oilholder, a valve, an oilreservoirhaving a valve-seat, a cylinder surrounding the valve seat, and anelastic ring encircling the said cylinder andsecurely held in positionby the upper edge of said oil-holder, as set forth.

4. In a lamp of the student-lamp type, the

combination of the oil-reservoir K, having a reservoir and holder, anair-tube, W, connecting the air-cap chamber with the holder, and

consisting of a brace-ring, G, a cast ring, A,

having conduits for air and oil leading tolthe burner, and thebinding-rods in, connecting said rings, in combination with alifting-rod sustaining a shade-holder and passing through said conduitsand the rim of said brace-ring, substantially as described.

7. In a lamp, the combination of a frame for the oil-reservoir, ashade-ring,a burner, and a vertically-adjustable lifting-rod for theshade and ring, the shade-ring adapted to be disconnected from the rodand rest on the burner.

8. In a lamp, the combination of a reservoir-frame, a lifting-rodmovably fixed in said frame, and a ring carrying the chimney-h older andburner-cap, movably attached to said rod, substantially as described.

9. In a lamp the combination ofan oil-tube, a drip-collar havingperforations and secured to the upper end of the tube, a wick-tubesecured t0 the collar, and a perforated burnerplate seated on the collarand surrounding the wick-tube, as set forth.

10. In a lamp, the combination of a liftingrod, A, adapted to be movedvertically in guides on the frame of the lamp, a shadeholder, D, rigidlyattached to said rod, and a ring, F, sustaining a chimney-holder and aburner-cap and movably attached to said rod, substantially as described.

11. In a lamp, the combination of wick-tube chamber, cylindersurrounding the chamber,

a burner-plate and chimney-holder adapted to be removed therefrom, and acoupling secured to the cylinder to engage the burnerplate, as setforth.

12. In a lamp, the combination of wickchamber L, cylinder M,burner-plate K, chimney-holder g", ring G, having openings IIO g andsurrounding the burner-plate, and ring H, having hooked lugs h andsurrounding the cylinder, as and for the purpose set forth.

13. In a lamp, the combination, with the ring G and the cylinder M,having slot h, of I 15 the coupling-ring H and a ring of non-conductingmaterial secured to the coupling-ring by pin 12. as set forth.

The foregoing specification of my invention signed by me this 20th dayof June, A. D. 1883.

JOHN KIRBY, JR.

Vitnesses:

ALFRED L. RoLLwAGEN, Brennan L. AYER.

